US2741718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency apparatus
Assignee: Unisys Corp
•
Filing: 1950-09-26
•
Granted: 1956-04-10
•
Expires: 1970-09-26
Abstract
No abstract record available.
Inventors
- 👤 Chao C Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:51
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/02; G06F1/03; G06F1/0314; D; D01; D01D; D01D5/00; D01D5/20; D01H; D01H5/00; D01H5/18; D01H5/32; D01H5/36; G07; G07C; G07C15/00; H; H01; H01J; H01J23/00; H01J23/02; H01J23/08; H01J23/087; H01J3/00; H01J3/02; H01J3/029; H03; H03K; H03K3/00; H03K3/84; G06F2101/00; G06F2101/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2235527A
Cited
US2300052A
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US2367295A
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US2293152A
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US2409608A
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US2602148A
Cited
US2541843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |